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arXiv · 2310.11179

A diffusive wetting model for water entry/exit based on the weakly-compressible SPH method

Shuoguo Zhang·Yu Fan·Chi Zhang·Nikolaus Adams·Xiangyu Hu
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Abstract

This paper proposes a diffusive wetting model for the weakly-compressible smoothed particle hydrodynamics (WCSPH) method to simulate individual water entry/exit as well as the complete process from water entry to exit. The model is composed of a physically consistent diffusive wetting equation to describe the wetting evolution at the fluid-solid interface, a wetting-coupled identification approach to determine the type of fluid particles by taking into account the wetting degree of the contacted solid, and a numerical regularization on the fluid particles at fully wetted fluid-solid interface. The accuracy, efficiency, and versatility of the present model are validated through qualitative and quantitative comparisons with experiments, including the 3-D water entry of a sphere, the 2-D water entry/exit of a cylinder, and the complete process from water entry to exit of a 2-D cylinder.

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Shuoguo Zhang, Yu Fan, Chi Zhang, Nikolaus Adams, Xiangyu Hu. 2023-10-17. A diffusive wetting model for water entry/exit based on the weakly-compressible SPH method. https://arxiv.org/abs/2310.11179

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